Nail makeup composition comprising an alkyd resin and a polyester, and packaging and application assembly

ABSTRACT

The present invention relates to a nail makeup and/or care composition comprising, in a physiologically acceptable medium, at least one alkyd resin and at least one polyester derived from the polycondensation of adipic acid, of a polyalcohol and of a compound comprising three acid and/or anhydride functions, the weight content, relative to the total weight of the composition, of alkyd resin being greater than the weight content of said polyester, and also to a packaging and application assembly for applying a composition containing said polyester to the nails, and to nontherapeutic processes for making up and/or caring for the associated nails.

This non provisional application claims the benefit of French Application No. 04 14061 filed on Dec. 29, 2004 and U.S. Provisional Application No. 60/648,395 filed on Feb. 1^(st), 2005.

The present invention relates to a nail makeup and/or care composition comprising an alkyd resin combined with a polyester, the alkyd concentration being greater than the polyester concentration, which is capable of affording good staying power and for example long-lasting staying power. This invention also relates to a nail makeup device for obtaining long-lasting makeup. The present invention also relates to the corresponding makeup processes.

The composition may be used as a nail makeup product such as a colored nail varnish, as a nail base or “basecoat”, and a finishing composition, also known as a “topcoat”, to be applied under or over the nail makeup product, or alternatively as a cosmetic nail care product such as a treating base for protecting, strengthening and/or repairing the nails.

This composition may be applied to human nails or to false nails.

In general, film-forming agents such as nitrocellulose combined, if necessary, with another polymer known as a co-film-forming agent or co-resin and/or with plasticizers, may be used to give to the film obtained after depositing nail varnish good adhesion and good flexibility.

One of the characteristics consistently desired by nail varnish wearers is the production of a film of varnish that has the longest possible staying power. There is thus a need to find particular film-forming agent systems capable of satisfying these staying-power expectations, but also capable of uniform application of the varnish over the entire length of the nail, and good resistance of the film of varnish to impacts and to wear, for example to avoid cracking and chipping thereof.

The Applicant has discovered that it is possible to obtain makeups that show improved staying power compared with that which may be obtained in the prior art, by using compositions comprising an alkyd resin combined with a particular polyester, the weight content, relative to the total weight of the composition, of alkyd resin being greater than the weight content of polyester.

Such a composition also allows an improvement in the duration of the staying power, and the production, after application to the nails, of a uniform deposit. Moreover, the composition according to the invention has the advantage of reducing striations and also of facilitating application of the varnish up to the tip of the nails. Finally, the varnish shows good resistance to impacts and to wear, for up to seven days after application.

According to one exemplary embodiment, the present invention relates to a nail makeup and/or care composition comprising, in a physiologically acceptable medium, at least one alkyd resin and at least one polyester derived from the polycondensation of adipic acid, of a polyalcohol containing for example from 2 to 6 carbon atoms and of a compound comprising three acid and/or anhydride functions and containing for example from 8 to 16 carbon atoms, the weight content, relative to the total weight of the composition, of alkyd resin being greater than the weight content of said polyester.

According to another examplary embodiment, the present invention relates to a packaging and application assembly for a nail makeup and/or care composition, comprising:

i) a container containing the composition, said composition containing a polyester derived from the polycondensation of adipic acid, of a polyalcohol and of a compound comprising three acid and/or anhydride functions, said composition being for example a composition in accordance with the invention;

ii) an applicator comprising a stem and an application member located at one end of the stem, said application member having at least one portion of elongate cross section.

The cross section is observed, for example, in a portion adjacent the stem, for example in a plane contiguous to the free end of the stem, or in a plane located halfway along the application member or closer to the distill end of the applicator.

According to another examplary embodiment, the present invention relates to a non-therapeutic nail makeup and/or care process, comprising the application to all or part of the nail of at least one coat of the nail makeup and/or care composition, as defined above.

According to another examplary embodiment, the present invention relates to a non-therapeutic nail makeup and/or care process comprising the application to all or part of the nail of at least one coat of a composition containing a polyester as defined above, said composition being applied using an applicator comprising a stem and an application member located at one end of the stem, said application member having at least one portion of elongate cross section, for example a portion adjacent the stem.

According to another examplary embodiment, the present invention relates to a synthetic made-up support comprising a makeup obtained via one of the processes of the invention.

The composition according to the invention comprises at least one alkyd resin, and also at least one polyester as defined below, the weight content of alkyd resin, relative to the total weight of the composition, being greater than the weight content of said polyester.

Alkyd Resin

Alkyd resins contribute toward the formation of a film on the nail and allow the gloss and the adhesion of the film to be improved.

The alkyd resins used according to the invention are polyesters comprising hydrocarbon-based fatty acid chains. Such resins are described for example in the Encyclopedia of Chemical Technology—Kirk-Othmer, 4^(th) edition, volume 2, pages 53 to 63, the content of which is incorporated into the present application by way of reference. These resins are obtained by polymerization of polyols and of polyacids or the corresponding anhydride thereof, in the presence of fatty acids. These fatty acids may be used in native form or in the form of fatty acid triglycerides or may alternatively be present in the oils during the synthesis of the alkyd resin.

On account of the presence of hydrocarbon-based fatty acid chains in the alkyd resin, alkyd resins may be defined by their oil length. Thus, according to the present invention, the term “oil length of an alkyd resin” is intented to mean the weight percentage of hydrocarbon-based fatty acid chains present in the alkyd resin.

As polyols that may be used for the synthesis of alkyd resin, mention may be made of glycerol, pentaerythritol, trimethylolpropane, trimethylolethane, neopentyl glycol, propylene glycol, ethylene glycol, 1,6-hexanediol, 1,4-butanediol and diethylene glycol.

As polyacid or anhydride, mention may be made for example of phthalic anhydride, isophthalic acid, terephthalic acid, trimellitic anhydride, maleic anhydride, adipic acid, fumaric acid, azaleic acid and sebacic acid.

The fatty acids used to obtain the alkyd resins present in the compositions according to the present invention correspond to the formula R—COOH, in which R denotes a saturated or unsaturated hydrocarbon-based radical containing from 7 to 45 carbon atoms approximately, for example from 9 to 35 carbon atoms, for example from 15 to 35 carbon atoms and for example from 15 to 21 carbon atoms.

Fatty acids that may for example be mentioned include capric acid (decanoic acid), palmitic acid, stearic acid, oleic acid, ricinoleic acid, linoleic acid and linolenic acid.

The fatty acids are present in the majority of the oils of natural origin, for example in the form of triglycerides. Fatty acid triglycerides are esters resulting from the reaction of the three alcohol functions of glycerol with fatty acids, these fatty acids possibly being identical or different. Oils of natural origin may thus be used during the polymerization. They may be chosen from linseed oil, Chinese wood oil, oititica oil, soybean oil, sunflower oil, passionflower oil, castor oil, coconut oil, olive oil, palm oil, rapeseed oil, groundnut oil and tall oil.

As alkyd resins that may be used according to the invention, mention may be made for example of those sold under the names “Beckosol ODE 230 70E” by the company Dainippon Ink & Chem (phthalic anhydride/glycerol/glycidyl decanoate copolymer at 70% in ethyl acetate), “Necowel 581®” (50% in soybean oil), “Necowel 585®” (20% in sunflower oil), “Necowel 580®” (20% in oil), “Necowel 586 N®” (50% in soybean oil), “Necowel EP 1161®” (50% in soybean oil), “Necowel EP 1213®” (20% in oil), “Necowel EP 2009®” (32% in sunflower oil), “Necowel EP 2019®” (20% in oil), “Necowel EP 2275®” (35% in oil), “Necowel EP 2329®” (34% in oil), “Necowel EP 3016®” (30% in oil) by the company Ashland, “Uradil XP 515 AZ®” (73% in tall oil) and “Uradil XP 516 Az®” (63% in tall oil) by the company DSM Resins.

The alkyd resin present in the composition according to the invention may be in the form of a mixture of several alkyd resins.

According to one exemplary embodiment, the alkyd resin may be present in a solids content of greater than or equal to 2%, for example greater than or equal to 4% and for example to 6% and 8% by weight relative to the total weight of the composition.

According to one examplary embodiment, the composition according to the present invention may comprise the alkyd resin in a solids content ranging from 2% to 25%, for example from 4% to 22% and for example from 6% to 19% by weight relative to the total weight of the composition.

Polyester

The composition according to the present invention also comprises a polyester. This polyester is defined as being derived from the polycondensation of adipic acid, of a polyalcohol containing for example from 2 to 6 carbon atoms and of a compound comprising three acid and/or anhydride functions and containing for example from 8 to 16 carbon atoms.

Examples of polyalcohols containing from 2 to 6 carbon atoms that may for example be mentioned include neopentyl glycol (2,2-dimethyl-1,3-propanediol), ethylene glycol, propylene glycol, 1,3-propanediol, 2-methyl-1,3-propanediol, 2,3-butanediol, 2,2-propanediol, 1,1-ethanediol, glycerol, pentaerythritol, trimethylolpropane, trimethylolethane, 1,6-hexanediol, 1,4-butanediol and diethylene glycol.

According to one examplary embodiment, the polyalcohol may be a dialcohol.

An example of a compound containing three acid and/or anhydride functions that may be mentioned is trimellitic anhydride.

In this respect, mention may be made, for example, of the polyesters with the CTFA name “adipic acid/neopentyl glycol/trimellitic anhydride copolymer”.

For example, the product sold under the name “Uniplex 670-P” by the company Unitex Chemical Corporation contains such a polyester.

The polyester present in the composition according to the invention may be in the form of a mixture of polyesters.

According to one examplary embodiment, said polyester may be present in a solids content of greater than or equal to 0.01%, for example greater than or equal to 0.1%, for example greater than or equal to 0.5%, and for example to 1% by weight relative to the total weight of the composition.

For example, the composition according to the present invention may comprise said polyester in a solids content ranging from 0.01% to 20%, for example from 0.1% to 15% and for example from 0.5% to 10% by weight relative to the total weight of the composition.

According to one examplary embodiment, the weight ratio, expressed as solids, between the alkyd resin and the particular polyester is greater than 1, for example greater than 2 and for example greater than 4. This weight ratio may be, for example, between 1 and 15 and for example between 4 and 10.

Film Forming Polymer

The composition according to the present invention may comprise a film-forming polymer or a mixture of film-forming polymers, according to the description that follows.

The term “film-forming polymer” denotes a polymer capable, by itself or in the presence of an auxiliary film-forming agent, of forming a continuous film that adheres to a support and for example to keratin materials.

This or these film-forming polymer(s) may be chosen from the group consisting of free-radical polymers, polycondensates and polymers of natural origin.

The film-forming polymer(s) may be organic or mineral.

According to one examplary embodiment a first variant of the invention, an organic film-forming polymer is at least one polymer chosen from the group comprising: film-forming polymers that are soluble or dispersible in at least one category of organic solvent, for instance ketones, alcohols, glycols and propylene glycol ethers, short-chain esters and alkanes, and mixtures thereof.

The film-forming polymer may be chosen for example from cellulose-based polymers such as nitrocellulose, cellulose acetate, cellulose acetobutyrate, cellulose acetopropionate or ethyl cellulose, or alternatively polyurethanes, acrylic polymers, vinyl polymers and polyvinyl butyrals, and mixtures thereof.

Film-forming polymers that may for example be used include nitrocellulose RS ⅛ sec; RS ¼ sec.; ½ sec.; RS 5 sec.; RS 15 sec.; RS 35 sec.; RS 75 sec.; RS 150 sec; AS ¼ sec.; AS ½ sec.; SS ¼ sec.; SS ½ sec.; SS 5 sec., sold for example by the company Hercules, the nitrocelluloses in isopropyl alcohol sold by the company Bergerac; the toluenesulfonamide formaldehyde resin “Ketjentflex MS80” from the company Akzo or “Santolite MHP” and “Santolite MS 80” from the company Faconnier or “Resimpol 80” from the company Pan Americana, the acrylic resin “Acryloid B66” from the company Rohm & Haas, and the polyurethane resin “Trixene PR 4127” from the company Baxenden.

According to one exemplary embodiment, the composition according to the present invention may comprise nitrocellulose, for example in a solids content of greater than or equal to 4%, for example greater than or equal to 6% and for example to 8% by weight, and for example greater than or equal to 10% by weight relative to the total weight of the composition.

According to one examplary preferred embodiment, the composition according to the present invention may contain nitrocellulose as the film-forming agent in quantitatively largest amount.

The total content of film-forming polymer solids may range from 0.1% to 30% by weight and for example from 4% to 20% by weight relative to the total weight of the composition.

Auxiliary Film-Forming Agent

To improve the film-forming properties of the nail varnish composition, an auxiliary film-forming agent may be provided.

Such an auxiliary film-forming agent may be chosen from any compound known to those skilled in the art as being capable of fulfilling the desired function, and may be chosen for example from plasticizers and coalescers for the film-forming polymer(s).

Thus, the composition may also comprise at least one plasticizer and/or one coalescer. For example, mention may be made, alone or as a mixture, of common plasticizers and coalescers, such as:

glycols and derivatives thereof, such as diethylene glycol ethyl ether, diethylene glycol methyl ether, diethylene glycol butyl ether or diethylene glycol hexyl ether, ethylene glycol ethyl ether, ethylene glycol butyl ether or ethylene glycol hexyl ether;

glycol esters;

propylene glycol derivatives and for example propylene glycol phenyl ether, propylene glycol diacetate, dipropylene glycol ethyl ether, tripropylene glycol methyl ether, diethylene glycol methyl ether and propylene glycol butyl ether;

acid esters, for example carboxylic acid esters, such as citrates, phthalates, adipates, carbonates, tartrates, phosphates and sebacates;

oxyethylenated derivatives such as oxyethylenated oils, for example plant oils such as castor oil; and

mixtures thereof.

According to one examplary embodiment, the composition may comprise, as plasticizer, a compound corresponding to formula (I) defined below, a compound corresponding to formula (II) defined below, or a mixture of these two plasticizers.

The compounds corresponding to formula (I):

in which

R₁, R₂ and R₃, which may be identical or different, represent H or a linear, branched or cyclic, saturated or unsaturated C₁-C₃₀ alkyl chain, at least one from among R₁, R₂ and R₃ being other than a hydrogen atom, and

R₄ represents a hydrogen atom or a group R′₄—CO—, in which R′₄ represents a C₁-C₈ alkyl group,

are compounds known to those skilled in the art, which belong to the citrate family mentioned above. Mention may be made for example of: tributyl acetylcitrate, triethyl citrate, tributyl citrate, triethyl acetylcitrate and tris(2-ethylhexyl) acetylcitrate.

The compounds of formula (II):

in which

α represents the ortho or para position of the methyl group, and

R and R′, which may be identical or different, represent a hydrogen atom or a linear, branched or cyclic, saturated or unsaturated C₁-C₆ alkyl group, are compounds that are well known to those skilled in the art. For example, mention may be made of N-ethyl-o,p-toluenesulfonamide (mixture of ortho and para isomers), which is commercially available, for example, from the company Monsanto under the brand name “Santicizer 8”.

The amount of plasticizer or of coalescer may be chosen by a person skilled in the art on the basis of his general knowledge, so as to obtain a composition that has cosmetically acceptable properties. The plasticizer content may range, for example, from 0.1% to 15% by weight and for example from 0.5% to 12% by weight relative to the total weight of the composition.

According to one examplary embodiment, the composition according to the present invention may contain a compound of formula (I) as defined above and for example tributyl acetylcitrate in a content ranging from 0.1% to 15% by weight and for example from 0.5% to 10% by weight relative to the total weight of the composition.

According to another examplary embodiment, the composition according to the present invention may contain a compound of formula (II) as defined above and for example N-ethyl-o,p-toluenesulfonamide in a content ranging from 0.1% to 15% by weight and for example from 0.5% to 10% by weight relative to the total weight of the composition.

According to another examplary embodiment, the composition according to the present invention may contain a compound of formula (I) as defined above and for example tributyl acetylcitrate and a compound of formula (II) as defined above and for example N-ethyl-o,p-toluenesulfonamide, for example, in the contents defined above.

Thickener

The thickener may be chosen for example from: hydrophobic silicas, such as those described in document EP-A-898 960 and sold, for example, under the references “Aerosil R812® ”by the company Degussa, “Cab-O-Sil TS-530®”, “Cab-O-Sil TS-610®”, “Cab-O-Sil TS-720®” by the company Cabot, “Aerosil R972®” and “Aerosil R974®” by the company Degussa; clays such as montmorillonite, modified clays such as bentones, for example stearalkonium hectorite and stearalkonium bentonite, polysaccharide alkyl ethers (for example in which the alkyl group contains from 1 to 24, for example from 1 to 10, for example from 1 to 6 and for example from 1 to 3 carbon atoms) such as those described in document EP-A-898 958.

The total proportion of thickener(s) in the compositions according to the invention may range from 0.01% to 15% by weight, for example from 0.5% to 15% and for example from 0.5% to 10% by weight relative to the total weight of the composition.

Physiologically Acceptable Medium

The composition according to the invention may also comprise a physiologically acceptable medium. This denotes a non-toxic medium that may for example be applied to human integuments.

This medium may be of organic solvent type.

The physiologically acceptable medium of the composition may comprise at least one volatile solvent. The volatile solvent may be chosen for example from volatile organic solvents.

Organic Solvents

The composition according to the invention may comprise at least one organic solvent medium constituting an organic phase, composed of at least one organic solvent that is volatile or nonvolatile at room temperature.

The term “volatile organic solvent” means an organic solvent (or nonaqueous medium) capable of evaporating on contact with the skin in less than one hour, at room temperature and atmospheric pressure. The organic solvent is a volatile cosmetic solvent, which is liquid at room temperature, for example having a nonzero vapor pressure, at room temperature and atmospheric pressure, for example having a vapor pressure ranging from 0.13 Pa to 40 000 Pa (10⁻³ to 300 mmHg) and for example ranging from 1.3 Pa to 8000 Pa (0.01 to 60 mmHg).

The term “nonvolatile solvent” means a solvent that remains on the skin or the keratin fiber at room temperature and atmospheric pressure for at least several hours and that has for example a vapor pressure of less than 10⁻³ mmHg (0.13 Pa).

As organic solvents that are volatile or nonvolatile at room temperature, mention may be made of:

ketones that are liquid at room temperature, such as methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, isophorone, cyclohexanone and acetone;

alcohols that are liquid at room temperature, such as ethanol, isopropanol, butanol, diacetone alcohol, 2-butoxyethanol and cyclohexanol;

glycols that are liquid at room temperature, such as ethylene glycol, propylene glycol, pentylene glycol and glycerol;

propylene glycol ethers that are liquid at room temperature, such as propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate and dipropylene glycol mono-n-butyl ether;

short-chain esters (containing from 3 to 8 carbon atoms in total) such as methyl acetate, ethyl acetate, propyl acetate, n-butyl acetate, isopentyl acetate and aryl acetate;

alkanes that are liquid at room temperature, such as decane, heptane, octane, dodecane, cyclohexane and isododecane;

aldehydes that are liquid at room temperature, such as benzaldehyde and acetaldehyde,

carbonates, such as propylene carbonate and dimethyl carbonate,

acetals, such as methylal; and

mixtures thereof.

The solvent is chosen for example from short-chain esters (containing from 3 to 8 carbon atoms in total) and alcohols that are liquid at room temperature, and mixtures thereof.

The composition according to the invention may also contain one or more silicone oils, for example in small amounts, i.e. which may be less than 10% by weight of the solvent phase.

The term “oil” means a fatty substance that is liquid at room temperature (25° C.) and atmospheric pressure (10⁵ Pa).

They may be volatile or nonvolatile oils, such as polydimethylsiloxanes or dimethicones, phenyl dimethicones, alkyl dimethicones, dimethicone copolyols or cyclomethicones.

According to one examplary embodiment, the composition may comprise a silicone oil chosen from polydimethylsiloxanes. This silicone oil may have for example a viscosity at 25° C. of less than or equal to 500 cSt (5×10⁻⁴ m²/s) and for example less than or equal to 400 cSt (4×10⁻⁴ m²/s). Examples that may be mentioned in this respect include those sold under the reference DC200 Fluid by the company Dow Corning and for example the DC200 Fluid of viscosity 350 cSt or the DC200 Fluid of viscosity 5 cSt.

When the physiologically acceptable medium comprises a significant amount of organic phase, this organic phase may be present in a proportion ranging from 30% to 97% by weight and for example ranging from 50% to 95% by weight relative to the total weight of the composition.

Dyestuffs

The composition may comprise a dyestuff, which may be chosen from pulverulent compounds and/or dyes which are soluble in the medium of the composition. The dyestuff may be present in a content ranging from 0.01% to 10% by weight, relative to the total weight of the composition.

The pulverulent compounds may be chosen from the pigments and/or nacres and/or flakes usually used in nail varnishes.

The pigments may be white or colored, and mineral and/or organic. Among the mineral pigments that may be mentioned are titanium dioxide, optionally surface-treated, zirconium oxide or cerium oxide, and also iron oxide, chromium oxide, manganese violet, ultramarine blue, chromium hydrate and ferric blue, and metallic pigments, for instance aluminum, copper or bronze. Among the organic pigments that may be mentioned are carbon black, pigments of D & C type and lakes based on cochineal carmine, barium, strontium, calcium or aluminum, and guanine.

Mention may also be made of pigments with an effect, such as particles comprising a natural or synthetic, organic or mineral substrate, for example glass, acrylic resins, polyester, polyurethane, polyethylene terephthalate, ceramics or aluminas, the said substrate being uncoated or coated with metal substances, for instance aluminium, gold, copper or bronze, or with metal oxides, for instance titanium dioxide, iron oxide or chromium oxide, mineral or organic pigments and mixtures thereof.

The nacreous pigments may be chosen from white nacreous pigments such as mica coated with titanium or with bismuth oxychloride, coloured nacreous pigments such as titanium mica coated with iron oxides, titanium mica coated for example with ferric blue or chromium oxide, titanium mica coated with an organic pigment of the above-mentioned type and also fluorophlogopites with iron oxides.

Pigments with goniochromatic properties, for example liquid-crystal pigments or multilayer pigments, may also be used.

The dyes are, for example, Sudan red, DC Red 17, DC Green 6, β-carotene, soybean oil, Sudan brown, DC Yellow 11, DC Violet 2, DC Orange 5 and quinoline yellow.

The dyestuff may also be chosen from optical brighteners.

The composition may also comprise fibers optionally coated with optical brighteners.

Fillers

The composition according to the invention may additionally comprise at least one filler, especially in a content ranging from 0.01% to 50% by weight and for example ranging from 0.01% to 30% by weight, relative to the total weight of the composition. The term “fillers” should be understood as meaning colourless or white, mineral or synthetic particles of any shape, which are insoluble in the medium of the composition, irrespective of the temperature at which the composition is manufactured. These fillers may serve for example to modify the rheology or the texture of the composition.

The fillers may be mineral or organic in any form, platelet-shaped, spherical or oblong, irrespective of the crystallographic form (for example leaflet, cubic, hexagonal, orthorhombic, etc.). Mention may be made of talc, mica, silica, kaolin, polyamide (Nylon®) powders (Orgasol® from Atochem), poly-β-alanine powder and polyethylene powder, powders of tetrafluoroethylene polymers (Teflon®), lauroyllysine, starch, boron nitride, hollow polymer microspheres such as those of polyvinylidene chloride/acrylonitrile, for instance Exapancel® (Nobel Industrie) or acrylic acid copolymers (Polytrap® from the company Dow Corning) and silicone resin microbeads (for example Tospearls® from Toshiba), elastomeric polyorganosiloxane particles, precipitated calcium carbonate, magnesium carbonate, magnesium hydrocarbonate, hydroxyapatite, hollow silica microspheres (Silica Beads® from Maprecos), glass or ceramic microcapsules, and metal soaps derived from organic carboxylic acids containing from 8 to 22 carbon atoms and for example from 12 to 18 carbon atoms, for example zinc, magnesium or lithium stearate, zinc laurate or magnesium myristate.

Additives

The composition may also comprise any other ingredient or additive commonly used in cosmetic compositions and known to those skilled in the art as being able to be incorporated into a nail varnish composition.

Such ingredients or additives may be chosen from preserving agents, fragrances, oils, waxes, antioxidants, free-radical scavengers, spreading agents, wetting agents, dispersants, antifoams, neutralizers, stabilizers, active agents which may be chosen from essential oils, UV/solar screening agents, moisturizers, vitamins, proteins, ceramides, plant extracts, etc., and mixtures thereof.

The compositions according to the invention may also comprise, as active agents, nailcare agents such as keratin material hardeners, active agents that act on the growth of the nail, for instance methylsulfonylmethane and/or active agents for treating various localized nail complaints, for instance onichomycosis.

Needless to say, a person skilled in the art will take care to select this or these optional additional compound(s) and/or the amount thereof, such that the properties of the composition according to the invention are not, or are not substantially, adversely affected by the envisaged addition.

The composition of the present invention may be obtained according to the preparation processes conventionally used in cosmetics.

The nail makeup composition according to the invention may be for example a nail varnish composition. This composition may be applied to natural nails or synthetic nails such as false nails.

According to one examplary embodiment, the present invention relates to the use of a composition as defined above to form a basecoat, in a multilayer makeup.

According to one examplary embodiment, the present invention relates to a method to form a basecoat, in a multilayer makeup, comprising the use of a composition as defined above.

Packaging and Application Assemblies

The composition according to the present invention may advantageously be applied using any type of applicator for applying a product to the nails. For example, such an applicator may comprise a stem and an application member located at one end of the stem, this application member comprising, for example, bristles fixed in a housing of an end portion of the stem.

The Applicant has found that the application of the composition according to the invention is facilitated by using an examplary type of applicator.

Thus, according to one examplary embodiment, the present invention relates to a packaging and application assembly for a nail makeup and/or care composition, comprising:

i) a container containing the composition, said composition containing a polyester derived from the polycondensation of adipic acid, of a polyalcohol and of a compound comprising three acid and/or anhydride functions, said composition being for example a composition in accordance with the invention;

ii) an applicator comprising a stem and an application member located at one end of the stem, said application member having at least one portion of elongate cross section, for example a portion adjacent the stem.

According to another examplary embodiment, this packaging and application assembly may be used for example for applying the composition that is the subject of the present invention, i.e. comprising said polyester, and also an alkyd resin, the weight content, relative to the total weight of the composition, of alkyd resin being greater than the weight content of said polyester.

The application member may consist of an arrangement of bristles, also referred to as a bundle of bristles, implanted in an end portion of the stem, in the form of at least one tuft of elongate cross section at its base or in the form of a plurality of adjacent tufts, which may then each have a circular cross section, for example.

The elongate form in cross section of the application member, when it is a bundle of bristles, may be obtained, for example, by means of a particular implantation of said bristles and/or by means of a housing having an aperture whose cross section has a suitable shape, for example noncircular, for example rectangular, oval or kidney-shaped.

Applicators comprising an arrangement of bristles as application member and the housing of which, which receives said bristles in the stem, has an aperture of oblong cross section along an axis of greater length and whose stem comprises a wall of variable thickness around the housing, may be used in the context of the present invention.

Irrespective of the shape of the housing that receives them, the bristles may be attached to the stem in numerous ways, for example by being stapled, overinjected, bonded and/or attached by crimping or stamping of the stem.

The bundle of bristles may comprise bristles that are of the same or different nature. The bundle of bristles may comprise, for example, a mixture of bristles, for example bristles of different hardnesses and/or shapes, for example bristles with different cross sections and/or possibly having waves.

The bristles may be made with additives that increase the force of retention of product by capillary action or that promote the slipperiness. The choice of bristles and of the shape of the bundle may be made for example as a function of the rheological properties of the composition.

The application member may alternatively consist of a spatula. Other application members may also be used, such as application members with capillary retention, with a felt or with a flocked tip.

Such application members are described for example in patent U.S. Pat. No. 6,220,254 as regards the application members of spatula type or application members whose surface is flocked, i.e. covered with fine hairs. As regards the application members of flocked or foam type, reference may also be made to document EP 693 263. Patent U.S. Pat. No. 6,666,607 itself describes application members of applicator type by capillary retention. All of these documents describing various types of application member are incorporated herein by reference.

Moreover, the application member may be obtained by molding with the stem or may be added onto the stem. The stem may be rigid or flexible. The stem may be curved or straight.

It has been found that the applicator as described in document US 2004/0 096 261 A1, which is incorporated into the present text by reference, is for example suited to applying the composition as defined above, allowing a precise, uniform application and avoiding the formation of striations.

Thus, according to another examplary embodiment, the present invention relates to a packaging and application assembly for applying a makeup and/or care composition as defined above to the nails, comprising a container containing the composition according to the invention defined above and an applicator comprising a stem and bristles fixed in a housing of an end portion of the stem, the housing having an aperture of noncircular and for example oblong cross section, said cross section being for example elongate along an axis of greater length, the stem comprising for example a wall of variable thickness around the housing.

According to one examplary embodiment, the stem has, in its end portion, a cross section having an outer contour that has no concavity, with the exception of a groove or of two grooves located opposite each other, this or these grooves extending along at least a part of the stem and being located substantially, when the stem is observed in cross section, halfway along the axis of greatest length of the housing receiving the bristles.

The outer contour having no concavity may be convex and may comprise, where appropriate, at least one flat side.

For example, the stem has in cross section at least one groove or two grooves located opposite each other, this or these grooves extending along at least a part of the stem and being located substantially, when the stem is observed in cross section, halfway along the axis of greatest length of the housing receiving the bristles.

Thus, the thickness of product surrounding the stem may be greater in the groove(s) than on the sides.

The nail varnish composition as defined above that flows along the stem when the applicator is extracted from the container thus reaches the bundle of bristles for example in a substantially central region thereof, such that the composition may be spread under good conditions. The amount of composition reaching the sides of the brush is reduced.

As mentioned above, the stem may comprise a second groove opposite the first, and the applicator may be symmetrical relative to a midplane.

The two grooves may be for example symmetrical relative to a midplane parallel to the axis X, but it would not constitute a departure from the context of the present invention if the grooves were of different shapes.

The invention may be understood more clearly on reading the detailed description that follows, of nonlimiting embodiments thereof, and on inspection of the attached drawing, in which:

FIG. 1 is a schematic view, in axial cross section, of a packaging and application assembly for a composition as defined above,

FIG. 2 partially represents the applicator of the device of FIG. 1,

FIG. 3 represents in isolation, in axial cross section, the stem of the applicator of FIG. 1,

FIG. 4 represents a detail of the housing receiving the bristles of the brush,

FIG. 5 is a cross section along V-V of FIG. 4,

FIG. 6 is a cross section to enlarged scale along VI-VI of FIG. 2, and

FIG. 7 is a view similar to FIG. 6 representing a variant in which the bundle of bristles is in the form of a plurality of adjacent tufts,

FIG. 8 is a perspective view of the end of the stem comprising an application member of spatula type,

FIG. 9 is a perspective view of the end of the stem comprising an application member of the type with capillary retention,

FIG. 10 is a perspective view of the end of the stem comprising an application member of felt type, and

FIG. 11 is a perspective view of the end of the stem comprising an application member with a flocked tip.

FIG. 1 shows a packaging and application assembly 1 for the application of a nail varnish composition V, as defined above. This packaging and application assembly 1 comprises a container 2 containing the composition V and an applicator 3 comprising a plastic stem 4 equipped, in the illustrated example, at one end with a flat brush 5 and at the other end with a handle member 10 also constituting a stopper for closing the container 2.

The container 2 also comprises a bead 6, for example a metal bead, for homogenizing the varnish V before application, by shaking the device 1.

If reference is made to FIGS. 2 to 5, it may be seen that the stem 4 comprises at its top end a skirt 8 for fixing it in a housing of the lid 10, this lid being configured to screw onto the neck 11 of the container 2.

A collar 12 is made at the base of the skirt 8 to rest against the upper section of the neck 11 when the applicator is in place on the container 2.

The stem 4 comprises under the collar 12 a conical part 13 that can contribute toward the leaktightness of closure of the container 2 when the applicator 3 is in place thereon. The leaktightness may also be obtained via cooperation of surfaces of the stopper 10 and of the neck of the container.

The stem 4 also comprises a lower end portion 14, which is provided with a housing 15 in which are fixed the bristles of the brush 5, for example by stapling, bonding, fusion or overmolding.

A beveled edge 20 may be made at the free end of the stem 4, as may be seen in FIG. 4.

The stem 4 comprises, in the illustrated example, over a majority of its length down to its distal end 17, two opposite longitudinal grooves 18.

The housing 15 has an aperture of rectangular cross section, which is of elongate shape along an axis X perpendicular to the longitudinal axis of the stem 4.

The outer contour of the stem 4 and the housing 15 are, in the example under consideration, symmetrical relative to the axis X and relative to a median axis Y perpendicular to the axis X.

It may be seen in FIG. 5 that the thickness e of material surrounding the housing 15 is not constant, in the example under consideration. The thickness e might, in one examplary embodiment not illustrated, be constant, without this departing from the context of the present invention.

Besides the grooves 18, the outer contour 16 of the stem 4, when this stem is observed in cross section, is convex. For example, in the example under consideration, the contour of the stem 4 is delimited at the grooves 18 by circle portions 16 a, these circle portions being joined on the sides by circle portions 16 b that are convex toward the exterior and with a smaller radius of curvature than the portions 16 a.

The housing 15 may have, as may be seen in FIG. 4, a cross section that decreases in the direction of the base 19 of the housing. The bristles of the brush 5 spread out when the brush is applied to the nail.

In the example of FIG. 2, the bundle of bristles has, in cross section, about one third of the way along its apparent length l, starting from its free end, a substantially flattened cross section, as may be seen in FIG. 6.

In the illustrated example, the thickness of the bundle is substantially constant but this may be otherwise, and the thickness of the bundle may, for example, increase or decrease on approaching the midplane perpendicular to the axis X.

The bundle may consist of the implantation of one or more tufts of bristles in the stem. FIG. 7 shows a bundle 5 of bristles comprising several adjacent tufts 30.

Other application members will be described with reference to FIGS. 8 to 11.

FIG. 8 shows an application member 40 of spatula type that substantially follows the shape of the nails by virtue of its slightly incurved shape. The cross section of the application member 40 in a section plane perpendicular to the longitudinal axis Z has the general shape of a circle arc, adapted to the curvature of the nail.

FIG. 9 shows an application member 50 comprising a tubular wall 51 having in cross section an oblong shape, with at its center, a retention member 52 that makes, with the tubular wall 51 a circular space 53 of substantially constant width, chosen as a function of the nature of the product to be applied, such that the product is retained by surface tension between the tubular wall 51 and the retention member 52.

FIG. 10 shows an application member 60 made of felt, the mid-length cross section of which is of oblong shape.

FIG. 11 shows an application member 70 with a flocked surface, of substantially flattened shape.

The packaging and application assembly 1 is used in the following manner.

The user shakes the container 2 to allow the bead 6 to homogenize the nail varnish composition V as defined above, and the user then unscrews the stopper 10 and uses the brush 5 to apply said composition.

When the applicator 3 is removed from the container 2, composition is present on the stem 4 and this composition can run by gravity in the direction of the brush 5. The thickness of product is greater in the grooves 18, which can retain more of the composition by capillary action. The composition preferentially flows into the central region of the brush, which allows it to be spread more easily and more precisely.

Processes

A subject of the present invention is also a nontherapeutic nail makeup and/or care process comprising the application to all or part of the nail of at least one coat of a cosmetic nail makeup composition as defined above.

A subject of the present invention is also a non-therapeutic nail makeup and/or care process comprising the application to all or part of the nail of at least one coat of a nontherapeutic nail makeup and/or care composition that is the subject of the invention using the device as described above, and for example using the applicator more particularly described in patent application US 2004/0 096 261.

Finally, a subject of the present invention is a nontherapeutic nail makeup and/or care process comprising the application to all or part of the nail of at least one coat of a composition as defined above, said composition being applied using an applicator comprising a stem and an application member located at one end of the stem, said application member having at least one portion of elongate cross section.

A subject of the present invention is also a made-up support comprising a makeup that may be obtained via one of the processes of the invention. The support may be for example a nail makeup accessory, for example a false nail.

The examples given below are given for illustrative purposes and with no limiting nature.

Examples of Preparation of Nail Varnishes

The three compositions below are prepared according to the conventional methods:

The solids contents are indicated by the abbreviation “SC”. CHEMICAL NAME Ex.1 Ex.2 Ex.3 Nitrocellulose with 30% isopropyl alcohol (viscosity E22 - 1/2 S) 14.22 10.18 14.09 SC = 9.95 SC = 7.12 SC = 9.86 Nitrocellulose with 30% isopropyl alcohol (IDYL E27 from Bergerac) 0 0.30 0 SC = 0.21 Nitrocellulose with 30% isopropyl alcohol (viscosity E24 - 1/8 S) 2.00 2.00 2.00 SC = 1.4 SC = 1.4 SC = 1.4 Nitrocellulose with 30% isopropyl alcohol (Azur E80 from Bergerac) 1.32 2.81 1.18 SC = 0.92 SC = 1.96 SC = 0.82 Glycerophthalic alkyd resin esterified with branched fatty acids⁽¹⁾ at 70% 12.71 15.26 13.58 in ethyl acetate SC = 8.9 SC = 10.7 SC = 9.5 Polyester resin 2.00 2.00 2.00 Adipic acid/trimellitic anhydride/neopentyl glycol copolymer⁽²⁾ at 70% in SC = 1.4 SC = 1.4 SC = 1.4 butyl acetate Tributyl acetylcitrate 1.56 1.78 3.56 N-ethyl-O,P-toluenesulfonamide 3.83 4.71 2.20 Stearylbeuzyldimethylammonium-modified hectorite 1.37 0 1.10 Hydrophilic fumed silica 0 0.07 0 N-oleyldihydrosphingosine (Ceramide DVS603 from Chimex) 0.01 traces 0.01 2,4-dihydrobenzophenone 0 0.25 0 2-hydroxy-4-methoxybenzophenone 0 0.25 0 Titanium oxide (untreated anatase) coated with polyethylene oxide (97/3) 0 0 0.02 Silver-coated glass flakes (mean diameter: 40 microns (D50)) 0.90 0 0 (Metashine) Yellow iron oxide 0.04 0 0 Black iron oxide 0.02 0 0 Red 34 lake 0.02 0 0.12 Red 7 lake 0 0 1.2 Red 23 lake 0 traces 0 Red 6 lake 0.03 0 0.12 Polydimethylsiloxane (viscosity: 350 cSt or 350 mm²/s)⁽³⁾ 0.20 0 0.20 Isopropyl alcohol 3.18 3.34 3.20 Ethyl alcohol 0 1.30 0 Butyl acetate 30.31 29.87 28.32 Ethyl acetate 26.19 25.86 27.04 Citric acid, 1 H₂O 0.05 0 0.04 ⁽¹⁾sold by Shell under the brand name Cardura 30 ®. ⁽²⁾sold by Unitex Chemical Corporation under the name “Uniplex 670-P” ⁽³⁾sold by Dow Coming under the reference DC 200 Fluid (viscosity 350 cSt)

These composition were subjected to an in-house test by users, who used the device according to the present invention, i.e. comprising the applicator detailed above that is the subject of the attached FIGS. 1 to 5.

It was confirmed that these compositions show good staying power, which may last up to 7 days.

Gloss, impact strength, wear resistance, scratch resistance and chipping resistance were very widely noted.

Needless to say, the invention is not limited to the examples that have just been described.

Although the application of the composition using the applicator illustrated in FIGS. 1 to 6 is an example of implementation of the invention that presents advantages, the composition may be applied with conventional applicators, for instance brushes of any shape, or even with applicators without a bundle of bristles, such as applicators with capillary retention, with a felt or with a flocked tip.

Although the present invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. 

1. A nail makeup and/or care composition comprising, in a physiologically acceptable medium, (i) at least one alkyd resin and (ii) at least one polyester derived from the polycondensation of adipic acid, a polyalcohol and a compound comprising three acid or anhydride functions or mixtures thereof, wherein a weight content, relative to a total weight of the composition, of alkyd resin being greater than a weight content of said polyester.
 2. The composition according to claim 1, wherein the polyalcohol is a dialcohol and contains from 2 to 6 carbon atoms.
 3. The composition according to claim 1, wherein the compound comprising three acid or anhydride functions or mixtures thereof contains from 8 to 16 carbon atoms.
 4. The composition according to claim 1, wherein a solids content of alkyd resin is greater than or equal to 2% by weight relative to the total weight of the composition.
 5. The composition according to claim 1, wherein the alkyd resin is present in a solids content ranging from 2% to 25% by weight relative to the total weight of the composition.
 6. The composition according to claim 1, wherein the polyalcohol is selected from the group consisting of neopentyl glycol, ethylene glycol, propylene glycol, 1,3-propanediol, 2-methyl-1,3-propanediol, 2,3-butanediol, 2,2-propanediol, 1,1-ethanediol, glycerol, pentaerythritol, trimethylolpropane, trimethylolethane, 1,6-hexanediol, 1,4-butanediol and diethylene glycol.
 7. The composition according to claim 1, wherein the compound comprising three acid or anhydride functions or mixtures thereof is trimellitic anhydride.
 8. The composition according to claim 1, wherein said polyester is an adipic acid/neopentyl glycol/trimellitic anhydride copolymer.
 9. The composition according to claim 1, wherein said polyester is present in a solids content of greater than or equal to 0.01% by weight relative to the total weight of the composition.
 10. The composition according to claim 1, wherein said polyester is present in a solids content ranging from 0.01% to 20% by weight relative to the total weight of the composition.
 11. The composition according to claim 1, wherein a weight ratio, expressed as solids, between the alkyd resin and said polyester is greater than
 1. 12. The composition according to claim 1, wherein a weight ratio between the alkyd resin and said polyester is between 1 and
 15. 13. The composition according to claim 1, comprising one or more film-forming polymer(s).
 14. The composition according to claim 13, comprising nitrocellulose as the film-forming polymer.
 15. The composition according to claim 14, wherein the nitrocellulose is present in a solids content of greater than or equal to 4% by weight relative to the total weight of the composition.
 16. The composition according to claim 13, further comprising an auxiliary film-forming agent for the film-forming polymer(s).
 17. The composition according to claim 16, wherein said auxiliary film-forming agent is selected from the group consisting of plasticizers and coalescers.
 18. The composition according to claim 1, comprising a compound of formula (I)

in which R₁, R₂ and R₃, which may be identical or different, represent H or a linear, branched or cyclic, saturated or unsaturated C₁-C₃₀ alkyl chain, at least one from among R₁, R₂ and R₃ being other than a hydrogen atom, and R₄ represents a hydrogen atom or a group R′₄—CO—, in which R′₄ represents a C₁-C₈ alkyl group, as plasticizer.
 19. The composition according to claim 1, comprising a compound of formula (II)

in which α represents the ortho or para position of the methyl group, and R and R′, which may be identical or different, represent a hydrogen atom or a linear, branched or cyclic, saturated or unsaturated C₁-C₆ alkyl group, as plasticizer.
 20. The composition according to claim 1, comprising at least one organic solvent.
 21. The composition according to claim 20, wherein the at least one organic solvent is volatile.
 22. The composition according to claim 1, comprising a silicone oil selected from the group consisting of polydimethylsiloxanes.
 23. The composition according to claim 1, further comprising at least one additive selected from the group consisting of dyestuffs, preserving agents, fragrances, oils, waxes, surfactants, antioxidants, free-radical scavengers, spreading agents, wetting agents, dispersants, antifoams, neutralizers, stabilizers, active agents chosen from essential oils, UV-screening agents/sunscreens, moisturizers, vitamins, proteins, ceramides and plant extracts and mixtures thereof.
 24. A method to form a basecoat in a multilayer makeup, comprising applying a composition according to claim
 1. 25. A packaging and application assembly for a nail makeup and/or care composition, comprising: i) a container containing the composition, said composition containing a polyester derived from the polycondensation of adipic acid, a polyalcohol and a compound comprising three acid or anhydride functions or mixtures thereof ii) an applicator comprising a stem and an application member located at one end of the stem, said application member having at least one portion of elongate cross section.
 26. The packaging and application assembly according to claim 25, wherein said compositioncomprises, in a physiologically acceptable medium, (i) at least one alkyd resin and (ii) at least one polyester derived from the polycondensation of adipic acid, a polyalcohol and a compound comprising three acid or anhydride functions or mixtures thereof, wherein a weight content, relative to a total weight of the composition, of alkyd resin being greater than a weight content of said polyester.
 27. The packaging and application assembly according to claim 25, wherein the application member consists of an arrangement of bristles implanted in an end portion of the stem, in the form of at least one tuft of elongate cross section at its base, or in the form of a plurality of adjacent tufts.
 28. The assembly according to claim 25, wherein the application member consists of a spatula or of an application member with capillary retention, with a felt or with a flocked tip.
 29. The assembly according to claim 25, wherein the application member is obtained by molding with the stem or with a portion solidly fastened to the stem.
 30. The assembly according to claim 25, wherein the application member consists of an arrangement of bristles and in that the bristles are implanted in an end portion of the stem, by at least one of stapling, overinjection, welding, bonding, crimping of the stem, and stamping of the stem.
 31. The assembly according to claim 30, wherein the bristles are fixed in a housing of an end portion of the stem, the housing having an aperture of noncircular cross section.
 32. The assembly according to claim 31, wherein the housing has an aperture of oblong cross section.
 33. The assembly according to claim 31, wherein the aperture is of elongate cross section along an axis of greatest length and the stem comprises a wall of variable thickness around the housing.
 34. The assembly according to claim 33, wherein the stem has, in the end portion, a cross section having an outer contour that shows no concavity, with the exception of a groove or of two grooves, this or these grooves extending along at least a part of the stem and being located substantially, when the stem is observed in cross section, halfway down along the axis of the housing.
 35. The assembly according to claim 34, wherein the stem comprises two grooves located opposite each other.
 36. The assembly according to claim 35, wherein the grooves are symmetrical relative to a midplane parallel to the axis.
 37. The assembly according to claim 34, wherein the end portion of the stem has, in cross section, two convex opposite sides each connecting one of the sides comprising the groove to the opposite side.
 38. The assembly according to claim 25, wherein the polyalcohol is a dialcohol and contains from 2 to 6 carbon atoms and the compound containing three acid or anhydride functions or mixtures thereof contains from 8 to 16 carbon atoms.
 39. A nontherapeutic nail makeup and/or care process, comprising the application to all or part of the nail of at least one coat of a composition according to claim
 1. 40. A makeup process according to claim 39, wherein the surface to be made up is a natural or synthetic nail.
 41. A made-up synthetic support comprising a makeup obtained according to the process according to claim
 39. 42. The made-up synthetic support according to claim 41, wherein it is false nails.
 43. A nontherapeutic nail makeup and/or care process, comprising the application to all or part of the nail of at least one coat of a composition containing a polyester derived from the polycondensation of adipic acid, a polyalcohol and a compound comprising three acid or anhydride functions or mixtures thereof, said composition being applied using an applicator comprising a stem and an application member located at one end of the stem, said application member having at least one portion of elongate cross section.
 44. A makeup process according to claim 43, wherein the surface to be made up is a natural or synthetic nail.
 45. A made-up synthetic support comprising a makeup obtained according to the process according to claim
 43. 46. The made-up synthetic support according to claim 45, wherein it is false nails. 